What is 20/2-13/9?

How much is 202 minus 139. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • 779
  • 8 59
  • 8.5556 (rounded to 4 decimals)

Step by step solution

Subtract

202 - 139 = 15418

  1. Find common denominator by finding the Least Common Multiple(LCM)

    Multiples of 2 are   2, 4, 6, 8, 10, 12, 14, 16, 18 ....etc

    Multiples of 9 are   9, 18 ...etc

    The LCM of 2 and 9 is 18. So, the common denominator of 202 and 139 is 18. Now change the fractions into equivalent fractions with common denominator

    • 202 - 139
    • 20 * 92 * 9 - 13 * 29 * 2
    • 18018 - 2618
  2. Subtract

    • 18018 - 2618
    • 180 - 2618
    • 15418

    Subtract the numerators and place the difference over the common denominator.

Simplify

  • 15418
  • 779
  • 8 59
  1. Reduce fraction to its lowest terms

    • 15418
    • 154 ÷ 218 ÷ 2
    • 779

    The greatest common divisor of 154 and 18 is 2, the fraction 15418 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 2.

  2. Convert improper fraction 779 to mixed number

    • 779
    • 8 59

    77 divided by 9 is 8 with a remainder of 5